Process of lining pneumatic tires.



'No. 684,|08. Patented 0ct. 8, l90l.

J. SAVOIE. PROCESS OF LINING PNEUMATIC TIRES.

(Application filed May 29, 1901.)

(No Model.)

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JOSEPH SAVOIE, OF CENTRAL FALLS, RHODE ISLAND.

PROCESS OF LINING PNEUMATIC TIRES.

SPECIFICATION forming part of Letters Patent No. 684,108, dated October8, 1901.

Application filed May 29, 1901. Serial No. 62,447. (No specimens.) I

To ail w/tom it may concern:

Be it known that I, JOSEPH SAVOIE, a citizen of the United States ofAmerica, and a resident of Central Falls, county of Providence, andState of Rhode Island, have invented certain new and useful Improvementsin Processes of Lining Pneumatic Tires, of which the following is aspecification.

My invention has forits object an improved process of lining pneumatictires throughout with a continuous lining of caoutchouc or otherequivalent substance, and the mode of practicing my invention is asfollows: A suitable quantity of a fluid solution of caoutchouc or otherequivalent substance is introduced by means of the air-valve into thetire, which has previously had its air forced out by a compression ofthe entire tire. The compression of the tire and the consequent emptyingof the same of its air are readily accomplished by squeezing the tirewith the fingers of both hands at a point diametrically opposite theair-valve and while retaining the compression bringing both handssimultaneously along the tire to the air-valve. This leaves the tirecollapsed. A compressible tube containing a sufficient quantity of thefiuid' caoutchouc or other suitable compound is then screwed orotherwise inserted into the air-valve and its contents or so much as maybe necessary squeezed into the tire, the latter being secured in avertical position, with the valve at the lowest point. The collapsibletube is then removed from the valve and the latter is connected with acommon air-pump and the tire inflated. The first stroke of the pumpforces an air-bubble into the liquid caoutchouc, and as more air entersthis bubble increases in size, driving the surplus caoutchouc before itaround the whole inner surface of the tire and leaving such entire innersurface covered with a thin coating of caoutchouc. The extremities 0fthe bubble of air running around the tire in both directions meet at ornear a point diametrically opposite the air valve and coming togethermake a film or partition, which is sometimes ruptured and whichsometimes endures, this result, however, in neither case affecting thelining. The tire is now lined throughout with a film or coating ofcaoutchouc of a thickness dependent upon the quantity of material used,and this film Figure 1 shows the collapsed tire with a portion of theliquid caoutchouc introduced through the valve; Fig. 2, the same with abubble of air introduced; Fig. 3, the tire completely inflated; and Fig.4, a cross-section of the tire, showing the lining somewhat exaggeratedin thickness.

In Fig. 1, A is the collapsed tire; b, the airvalve; 0, a compressibletube of fluid solution of caoutchouc or other equivalent substance, andd a portion of the same introduced into the tire through the valve.

Fig. 2 shows the tire connected with the airpump and a bubble of air aintroduced into the fluid caoutchouc.

Fig. 3 shows the tire'completely inflated, cl being the lining orcoating of caoutchouc spread over the entire inner surface of the tire,and in this figure d shows the film or partition formed by the meetingof the opposite ends of the bubble of caoutchouc.

In Fig. 4 A shows an exaggerated crosssection of the substance or fabricof the tire and the lining d.

It will be seen that my process is equally applicable to new tires toremedy accidental defects or porosity and to old ones for the purpose offilling punctures or other injuries to the tire.

Having now described my invention, what I claim, and desire to secure byLetters Patcut, is-- 1. The herein-described process of lining pneumatictires, consisting in first collapsing the tire to empty it of air,introducing into.

IOO

panding the tire by introducing air into the bubble; substantially asdescribed.

2. The herein-described process of lining pneumatic tires, consisting infirst collapsing the tire to empty it of air, introducing into the tireat its lowest point fluid solution of caoutchouc or other equivalentsubstance, in sufficient quantity to form a mass substantially fillingthe tire at the point at which it is introduced, introducing air intothe mass of fluid to form a bubble therein, distributing the fluid in afilm throughout the interior of the tire, and simultaneously expandingthe tire by introducing air into the bubble, and hardening the film bypermitting part of the air to escape from the tire and 1'einflat ing;substantially as described.

Signed at Pawtucket this 20th day of May, 1901.

his JOSEPH SAVOIE. mark Witnesses:

JAMES L. JENKs, IRA P. ALLEN.

